Model sys's python implementation

Question

pypy

has many built-in function use python implementation.example:link

but,i can't find model 'sys' implementation.

how can i get it.

import sys
print help(sys)

• Antony Hatchkins: source of which function do you want from sys?

Answer 1

The sys module is implemented in C: http://svn.python.org/view/python/trunk/Python/sysmodule.c?view=markup

There is no Python source for it, because it's entirely operating system interfaces that cannot be implemented in pure Python.

• LeafStorm: sys provides functions crucial to the interpreter, and is really more of a reflection of interpreter state, so it is actually compiled in when the interpreter is built, and the values are all guaranteed to change at runtime. Pypy would have to use their own implementation of sys.

Answer 2

Abstraction can only be taken so far, Python strives to be a system/platform independent language and the sys module being what it is has to be platform specific and cannot be implemented in pure python.